Ordered pairs are (x,y). Since you already know your x values, all you must do is find your y values. To find your y values, plug your x values into the equation. For x=3, you plug 3 in for x. y=3+5, so y=8. Next, plug 5 in for x. y=5+2, so y=7. For your last ordered pair, plug 7 in for x. y=7+2, so y=9. Your ordered pairs would be (3,5), (5,7), and (7,9). Hope this helped!